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Bogor Regency (;, ) is a landlocked regency of West Java province in Indonesia, situated 40-50 kilometers south from the city of Jakarta as a national capital. Covering an area of 2,991.78 km2, it is considered largely a bedroom community for Jakarta, and was home to 5,427,068 people at the 2020 census. The official estimate as of mid-2025 was 5,721,618 (comprising 2,930,563 males and 2,791,055 females). The town of Cibinong serves as the seat of the regency administration.

The area has witnessed significant population growth. Two areas formerly within the regency have been split off as autonomous cities; on 27 April 1999, the city of Depok was unified with some neighbouring districts of Bogor Regency to form an autonomous city of Depok (independent of the regency), while Bogor city had previously been formed as an autonomous city (similarly independent of the regency). Despite these subtractions, Bogor Regency remains the most populous regency in Indonesia.

Based on official data from Badan Pusat Statistik for Bogor Regency for mid 2025, the population of Bogor Regency was 5,721,618 people, with an average density of 1,912 people/km2. Bogor Regency is an administrative area at the level of Regency; as such, it has the largest regency population in West Java and in Indonesia as a whole. The original inhabitants of Bogor Regency and West Java are generally Sundanese. Another ethnic group that is quite prominent is the Javanese, who are immigrants from the middle and east of Java Island, and some Betawi people, and also other immigrant ethnic groups including the Cirebonese, Batak, Tionghoa, Minangkabau, Bantenese.

Basede on data from the 2000 Indonesian Population Census, the following is the population size of Bogor Regency based on ethnicity;

Map of languages and dialects distribution in Greater Bogor (regency and city). Sundanese is used as the main language in almost all of Bogor Regency. This language is a lingua franca, especially in the village areas. The Sundanese language used in Bogor Regency is mainly divided into three dialects, the Bogor Sundanese dialect (Northern Sundanese) is used in the central and eastern regions of Bogor Regency; Banten Sundanese dialect is used in the Greater Jasinga area in the western part of Bogor Regency, where it is known as basa Sunda Jasinga (Jasinga Sundanese), and in the northern part of Bogor district, especially in the western part of Gunungsindur and the northern part of Rumpin; and the Priangan Sundanese dialect which is used in the southern and southeastern parts bordering Cianjur Regency and Sukabumi Regency.

Betawi language is also spoken in Bogor Regency, a Malay-based creole language with influences from other local languages, especially Sundanese. In Bogor Regency, this language is spoken in the north central part which borders the Depok and South Tangerang cities. The distribution area includes the districts of Bojonggede, Tajurhalang, Kemang (northern and eastern parts), Cibinong (northern part), Citeureup (northern part), Gunung Putri (northern part), Gunungsindur (eastern part), Parung, Ciseeng (eastern part), and Sukaraja (northern part), especially in the villages of West and East Cilebut, where the language there is a mixture of Sundanese and Betawi, known as the bahasa Cilebut (Cilebut language).

In 1745, the forerunners of the Bogor community originally came from 9 settlement groups with 3 combined major groups, namely Bogor (central region), Tjibaroesa/Djonggol (eastern and northern regions) and Parung (western region) which was combined by the Governor-General Dutch Indies, Baron van Inhof into the core of the Bogor Regency community unit.

At that time, the Regent of Demang Wartawangsa tried to improve the quality of the environment and the welfare of the people based on agriculture by digging canals from Ciliwung River to Cimahpar and from Nanggewer to Kalimulya.

In 1908 Bogor Regency was composed of five kawedanan each led by a demang, namely Buitenzorg, Tjibaroesa, Cibinong, Parung, and Leuwiliang. Then, to facilitate district tasks, a number of under-districts were formed, each headed by an assistant demang.

The history of Bogor Regency had a close relationship with the era of the kingdom that once ruled in the region. In the previous four centuries, Sri Baduga Maharaja was known as the king who started the era of Pajajaran Kingdom, The king was famous for the teachings of his venerated ancestors who pursued prosperity. Since then successively recorded in the history of the kingdoms that once ruled in the region, namely;

Tarumanagara Kingdom, ruled by 12 kings. Ruled from 358 to 669. Galuh Kingdom, ruled by 14 kings. Ruled from 516 to 852. Kingdom of Sunda, ruled by 28 kings. Reigned from 669 to 1333. Kingdom of Kawali, ruled by 6 kings. Ruled from 1333 to 1482. Pajajaran Kingdom, ruled from 1482 to 1579. The inauguration of the famous king as Sri Baduga Maharaja, became a special concern. At that time it was known as the Kuwedabhakti Ceremony. held on June 3, 1482. That date would have been later designated as the Anniversary of the City of Bogor and the Regency of Bogor.

After the Proclamation of Independence, to be precise in the era of United States of Indonesia or RIS, Bogor Regency was included in the proposed State of Pasundan area, then defined as SK Wali Negeri Pasundan Nomor 12 which stated that in the Bogor Regency, six kawedanan would be re-established, namely; Kawedanan Buitenzorg (covered Ciomas, Semplak, Kedunghalang, Tamansari, Cijeruk, Cigombong, Caringin, Ciawi, Cisarua and Megamendung Districts; note that Semplak and Kedunghalang Districts would subsequently be included in the modern Bogor City areas) Kawedanan Cibinong (covered Cibinong, Bojonggede, Tajurhalang, Sukaraja, Citeureup, and Babakan Madang Districts) Kawedanan Parung (covered Parung, Gunungsindur, Kemang, Rumpin, Rancabungur and Ciseeng Districts, and Depok City) Kawedanan Djonggol (covered Jonggol, Gunung Putri, Klapanunggal, Cileungsi, Sukamakmur, Cariu, and Tanjungsari Districts; note that two further Districts - Cibarusah and Jatisampura - would later be moved to Bekasi Regency, while Cikalongkulon District would be moved into Cianjur Regency and Pangkalan District would be moved to Karawang Regency) Kawedanan Leuwiliang (covered Leuwisadeng, Leuwiliang, Cibungbulang, Ciampea, Pamijahan, Tenjolaya and Dramaga Districts) Kawedanan Jasinga (covered Jasinga, Sukajaya, Tenjo, Parungpanjang, Nanggung, and Cigudeg Districts).

Intended division of Bogor Regency (prior to the creation of Bogor City as an independent administration) into six areas: Kawedanan Jasinga (blue), Kawedanan Parung (orange), Kawedanan Leuwiliang (red), Kawedanan Cibinong (yellow), Kawedanan Buitenzorg (tosca), Kawedanan Jonggol/Tjibaroesa (green). This map excludes the districts transferred to adjacent Regencies in the 1950s, as well as Depok City.

The kawedanan were never re-established. However, in the 1950s, in line with the restructuring policy of regional autonomy, particularly with regard to organization and territory, Bogor Regency lost a lot of territory. The area that lost the most territory was Kawedanan Jonggol, from which Cibarusah District and Jatisampurna District were transferred to Bekasi Regency (Jatisampurna became in turn part of the new Bekasi City when that was separated from Bekasi Regency on 16 December 1996), while Cikalongkulon District was transferred to Cianjur Regency and Pangkalan District was transferred to Karawang Regency.

In 1975, the Central Government instructed that Bogor Regency should have a Government Center in its own Regency area. On this basis, the Regional Government of Bogor Regency conducted research in several areas of Bogor Regency to become a candidate for the capital as well as to act as the center of government. Alternative locations that were to be considered included Ciawi District, Leuwiliang District, Parung District, Semplak District and Cibinong District.

The results of further research indicated that the location submitted to the Central Government for approval as a candidate for the regency capital was Rancamaya (currently a part of Bogor City). However, the Central Government considered that Rancamaya was still relatively close to the Government Center Bogor City and it was feared that it would be swallowed up by the regional expansion and development of Bogor City.

Considering the plans at that date for the establishment of Depok as a separate administrative City and for a putative Jonggol Regency, which had been discussed by the Minister of Home Affairs Amir Machmud with the Governor of West Java, the Regional Government of Bogor Regency took one alternative area, namely Kemang which was the most midpoint for the districts in Bogor Regency if the Administrative City of Depok was formed and Jonggol Regency was separated from Bogor Regency.

In the plenary session of the Bogor Regency DPRD in 1980, the village of Kemang was no longer to be considered as a candidate for the capital city of Bogor Regency. This was due to the limited availability of land owned by the district government and to minimal infrastructure, pending the debate on the formation of Jonggol Regency which is still considered raw. Finally, it was determined that the candidate for the capital city of Bogor Regency should be located in Tengah Village (now Tengah Kelurahan, in Cibinong District).

The determination of the candidate for the capital was proposed back to the Central government and received approval by Government Regulation No. 6 of 1982, which confirmed that the capital city of the Bogor Regency Government Center should be located in Tengah Village, Cibinong District. From then on, the preparation plan for the construction of the capital's Central Government began in Bogor Regency and on 5 October 1985 the groundbreaking ceremony was held by the then Regent of Bogor Regency.

Considering the vast area of Bogor Regency plus the rapid population growth which is due to the geographical location of Bogor Regency as a buffer zone for Jakarta, several debates emerged regarding regional expansion based on regional development. In 1978, the Minister of Home Affairs Amir Machmud proposed the establishment of an administrative city of Depok which would include the District of Depok as well as other districts bordering Jakarta, especially those affected by the construction of Perumnas in the region. It was planned that administrative city of Depok would be made an organized residential area for workers in Jakarta.

The Governor of West Java, Aang Kunaefi, also proposed to the Minister of Home Affairs (Amir Machmud) the establishment of an area in the former Kawedanan Jonggol which has partially been to other districts to be unified as District Level II Regions. The Jonggol area and its surroundings were considered suitable, because the area is quite large, has abundant natural wealth, and has the potential as a new residential area, industry, and tourism.

The area proposed as part of the expansion was formerly part of the territory of Kawedanan Jonggol, including, among others, the areas of Jonggol, Gunung Putri, Cileungsi and Cibubur. Also considered were areas from outside Bogor Regency (such as parts of Bekasi Regency, namely Cibarusah District and Pondok Gede District (southern area)) and part of Karawang Regency (namely Pangkalan).

In 1981, the status of Depok District was finally upgraded from district to administrative city based on Government Regulation Number 43 of 1981. Depok Administrative City was headed by the Administrative Mayor. Meanwhile, the idea of forming a separate Jonggol Regency was not implemented.

In 1994, President Suharto was interested in making one of the Bogor Regency's areas, namely Jonggol District (at that time including Sukamakmur, Cariu and Babakan Madang). as the location for the new national capital to replace Jakarta, because Jonggol is located only 40 km southeast of Jakarta.

Post-reformation is in line with the policy of eliminating autonomous regions of Administrative Cities throughout Indonesia. The government through Law Number 15 of 1999 increased the status of Depok to that of a municipality. Thus Depok city was officially separated from Bogor Regency and exercised its own autonomy. Provisional plans and preparations for moving the nation's capital to Jonggol sank along with the fall of Suharto in 1998.

25-200 mdpl (hijau), 201-400 mdpl (kuning muda), 401-600 mdpl (kuning), 601-800 mdpl (cokelat muda), 801-1.000 mdpl (cokelat sedang), >1.001 mdpl (cokelat tua).

Topografi Kabupaten Bogor bervariasi, dari dataran yang relatif rendah di bagian utara hingga dataran tinggi di bagian selatan, yang dikelompokkan berdasar ketinggiannya sebagai berikut: sekitar 29,28% berada pada ketinggian 15-150 meter di atas permukaan laut (dpl), 42,62% berada pada ketinggian 150-500 meter dpl, 19,53% berada pada ketinggian 500-1.000 meter dpl, 8,43% berada pada ketinggian 1.000-2.000 meter dpl dan 0,22% berada pada ketinggian 2.000–2.500 meter dpl.

Ketinggian 15–150 m dpl: Sebagian besar topografi rendah berada di bagian utara dan barat, seperti Cibinong, Bojonggede, Tajurhalang, Parung, Kemang, Ciseeng, Gunung Putri, Citeureup, Gunungsindur, Rancabungur, Tenjo, Parung Panjang, Jasinga, dan Cileungsi. Ketinggian 150 – 500 m: Topografi sedang sebagian besar berada di bagian tengah dan timur, seperti Jonggol, Babakan Madang, Ciomas, Leuwiliang, Leuwisadeng, Cigudeg, Ciampea, Sukaraja, dan Dramaga. Ketinggian >500 m: Topografi tinggi sebagian besar berada di bagian selatan, seperti Cisarua, Megamendung, Caringin, Sukamakmur, Pamijahan, Tenjolaya, Cijeruk, Nanggung, Cigombong, Sukajaya dan Tanjungsari.

Wilayah dengan ketinggian dan kemiringan rendah di Kabupaten Bogor juga dapat dilanda banjir, terutama pada saat musim hujan, yaitu: Gunung Putri, Cibinong, Citeureup, Parung, Gunungsindur, Parung Panjang, Cileungsi, dan Rumpin.

Kabupaten Bogor memiliki beberapa rangkaian gunung atau pegunungan yang tinggi dan besar, antara lain di bagian barat ada Pegunungan Halimun Salak yang membentang dari Kabupaten Lebak, Banten hingga kaki timur Gunung Salak. Kemudian, dua pegunungan yang mengurung Kawasan Puncak di sebelah selatan, yaitu Pegunungan Gede Pangrango yang membentang di tiga wilayah Kabupaten Bogor, Kabupaten Cianjur dan Kabupaten Sukabumi, disebelah utara Puncak, ada Pegunungan Jonggol yang membentang dari Sentul, Sukamakmur hingga Cipanas, Cianjur. Selain itu terdapat beberapa pegunungan kecil yang biasanya tandus dan terdiri atas batuan kapur, antara lain Pegunungan Cigudeg-Rumpin, Pegunungan Kapur Leuwiliang, Pegunungan Kapur Cileungsi dan Pegunungan Sanggabuana, yang berbatasan dengan Kabupaten Karawang dan Kabupaten Purwakarta.

Secara hidrologis, sebagian besar wilayah Kabupaten Bogor merupakan daerah aliran sungai Cisadane. Kabupaten Bogor terbagi dalam beberapa Daerah Aliran Sungai (DAS) di antaranya DAS Cidurian, DAS Cimanceuri, DAS Cisadane (sub DAS; Cisadane Hulu, Ciapus, Cihideung, Ciaruteun, Citempuan, Cikaniki dan Cianten), DAS Ciliwung (sub DAS; Ciesek, Ciliwung Hulu, Cibogo, Cisarua, Ciseupan dan Cisukabirus), DAS Kali Bekasi (sub DAS; Cikeas, Citeureup, Cileungsi, Cikarang), DAS Citarum. Selain itu juga terdapat 32 jaringan irigasi pemerintah, 794 jaringan irigasi pedesaan, 93 situ dan 96 mata air.